Which of the following will give Cannizzaro reaction? from

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 Multiple Choice QuestionsMultiple Choice Questions

541.

In the following reaction,

             C6H5CH2Br (ii)H3O+(i) Mg, EtherX, the product 'X' is

  • C6H5CH2OCH2C6H5

  • C6H5CH2OH

  • C6H5CH3

  • C6H5CH2CH2C6H5


542.

The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds

  • III > II > I

  • II > I > III

  • I > III > II

  • I > II > III


543.

Match the compounds given in List I with List II and select the suitable option using the codes given below.
  List I   List II
A. Benzaldehyde 1. Phenolphthalein
B. Phthalic anhydride 2. Benzoin
condensation
C. Phenyl benzoate 3. Oil of wintergreen
D. Methyl salicylate 4. Fries rearrangement

  • A   B   C   D

    4   1   3   2

  • A   B   C   D

    4   2   3    1

  • A   B   C   D

    2   3   4   1

  • A   B   C   D

    2   1   4    3


544.

An alkene having molecular formula C8H12 on ozonolysis yields glyoxal and 2, 2-dimethyl butane-l, 4-dial. The structure of alkene is


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545.

In a set of reactions acetic acid yielded a product D.

CH3COOH SOCl2A anhy. AlCl3BenzeneB HCNCH2OD

The structure of D would be


546.

CH3-CO-CH3 SeO2 X + Se + H2O: X is

  • None of the above


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547.

Which of the following will give Cannizzaro reaction?

  • CH3CHO

  • CH3COCH3

  • (CH3)3C-CHO

  • CH3CH2CHO


C.

(CH3)3C-CHO

Aldehydes containing no α-H atom give Cannizzaro's reaction. (CH3)3C-CHO does not contain α-H atom, hence it will give Cannizzaro reaction.

          


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548.

The product 'A' is

  • succinic acid

  • melonic acid

  • oxalic acid

  • maleic acid


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549.

Which of the following is a Gattermann aldehyde synthesis?


550.

Aldol is

  • β-hydroxybutyraldehyde 

  • α-hydroxybutanal

  • β-hydroxypropanal

  • None of the above


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